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Norma-Jean [14]
3 years ago
12

Factorise completely a). 3xy - 9x b). x² - 4 c). 2x² + 5y + 1​

Mathematics
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer:

a) 3x(y-3)

b) (x-2)(X+2)

Step-by-step explanation:

See the steps below:) You can also use the app photo math, you take a picture and it will give you the answer and explain the steps:)

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Estimate how much MORE water it would take to completely FILL the vase to the top?
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Answer:

81πinc^3

Step-by-step explanation:

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Volume of water in glass = π(3)^2(3) = 27πin^3

Volume needed to fill completely = 108π - 27π = 81π^3

Topic: Mensuration

If you like to venture further, please give my Instagram page a follow (learntionary). I'll be constantly posting math tips and notes! Thanks!

6 0
3 years ago
Jane paid $40 for an item after she received a 20% discount. Jane's friend says this means that the original price of the item w
Alika [10]

Answer:

she is incorrect because if she was given a 20% discount the amount she would have to pay is 38.4

Step-by-step explanation:

48 x .2 = 9.6

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3 0
2 years ago
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What is the value of the missing angle?<br> a.120 <br>b.130 <br>c.155 <br>d.720​
tatyana61 [14]

Answer:

B.

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6 0
3 years ago
The fraction of skilled workers is 4/9 , unskilled workers 1/10 supervisors 2/7 and the rest are managers if the total number of
Darina [25.2K]
This is all percentages so...
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2/7 = 29%
1/10 = 10%
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So 17% of 630 is left over which = 107
5 0
3 years ago
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Emily is buying a new mountain bike on layaway for $324 if she pays $54 each week how many weeks will it take Emily to pay for t
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Answer: 6 weeks

Step-by-step explanation: $54 x 6 = $324

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3 years ago
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